Nut-lock.



F. P. HUNKLE.

' NUT LOCK.

APPLICATION FILED MAY 21, 1912.

' (lnlllll lllllllllllllllllllllllIl v NNNNNN 0R Patented Apr. 15, 1913.

Fmsmuox P. HUNKLE, or lfimnsoim, yreinasYLVANIA.

NUT-toux.

To all whom 'it may concern:

Be it known that I, FREDRICK P. HUN- KLE, a citizen of the United States ot' America, residing` at McKeesport, in the county of Allegheny and State (if-Pennsylvania, have invented certain new and useful linprovements in Nut-Loeks, of which the tolflowing is a specification, reference being had therein to the accompanying drawing.

This invention relates to a nut locking device, and the primary oliject of my invention is the provision of positive and reliable lneans, in connection with a nut, whereby the nut' can be firmly locked upon a bolt and prevented from becoming accidentally disf laced.

Another object ot this invention is to provide a nut locking device that can he used in connection with the present type, of-

bolt, the device being of such construction that it can be manufactured at a comparatively small cost and easily and quickly installed.

A further object of this invention is to accomplish the aboveA results by a mechanical construction that will he hereinafter specifically described and then claimed, and ret'- erence will now be had to the drawing, wherein F'igure. 1 is a longitudinalv sectional view of the nut locking` device, Fig is an elevation ot' a detached locking device. Fig. 3 is a plan of the same, Fig. 4 is a perspective view of a detached nut in accordance with this invention, and Fig. 5 is a perspective view of the nut, broken away, illustrating the threaded projection on the in-ner face by the way of an example, two pieces of material having a registering opening 3 and extending through said openings is a'h'olt 4 that has a head 5 and an oval port-ion 6 engaging the-opening of the-.piece of material 1 to prevent the holt f'from rotating. The threaded end 7 of the holt protrudes from the'opening 3 of the piece ot niateria'l` 2 and screwed 4 upon said bolt is Aa nut 8. The inner face of the nut 8 has ay recess 9 that is substantially C-shaped, the wall of said recess having an inwardly projecting segment-shaped portion 10 that carries al continuation of the threads ll ot' the nut.

Sp'ecication of Letters Patent. Application led llray 21, 1912. Strial 698,730.

Patented Apr. 1 5, 1.913.

The reference numeral 12 denotes a nut locking device in the forni ot a resilient split. washer. The "asher l2 has the ends 13 thereofhent out of alinement and the ends of the washer are sufficiently separated to 'provide clearance tor the inwardly project.-

iner portion 10 of the nut 8. \Vhen the nut S is screwed upon the holt 4, the washer '12 ,is hound between the nut. and the piece oi material 2, and the resiliency of the washer issuch that it is placed under tension and exerts a pressure against .the nut, which binds the threads thereof againstthe threads of the holt. As the nut 8 is rotated, the washer 12 is carried with said nut hy reason of the inwardly projectingportion '10 engaging one ot the ends of the washer.

.lt is thon-grht that the operation and utility ot the nut locking' device. will he apparent without 'further description, and while in the drawitngr there are illustrated the preferred eml'iodilnents of the invention, I would have it understood that the structural elements are susceptible to such changes asx tall within the scope of the appended claim.v

Inl'a nut locking device comprising a threaded holt, a nut screwed upon said bolt and having its inner tace provided with af C-shaped recess opening` into the bore ot the .nut and cause the-threads of ythe projection `and the threadsof the nut to bind against v t-he'threads ot the holt thereby maintainingA the nut in position.

ln testimony whereof I affix my signature in the presence of two witnesses.

FREDRICK P. HUNKA. Witnesses: t

MAX H. Snomvrrzv, 1K. H. BUTLER. 

